/Engine/Plugins/Media/PixelStreaming/Source/PixelStreaming/Public/PixelStreamingInputComponent.h
Helper function to extract a string field from a JSON descriptor of a UI interaction given its field name. The field name may be hierarchical, delimited by a period. For example, to access the Width value of a Resolution command above you should use "Resolution.Width" to get the width value.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category="PixelStreaming Input") void GetJsonStringValue ( [FString](API\Runtime\Core\Containers\FString) Descriptor, [FString](API\Runtime\Core\Containers\FString) FieldName, [FString](API\Runtime\Core\Containers\FString) & StringValue, bool & Success )